Gerber Legendary Blades teamed up with legendary tactical knife designer Ernie Emerson to create the automatic opening Gerber-Emerson Alliance. The 3.5" black oxidized blade is forged from the finest 154 CM steel with a Rockwell hardness of 59 60 thus giving it strong edge retaining qualities. The handle is top grade machined 6061-T6 aluminum and finished in black. The blade spring is 315 stainless steel. Patent-pending safety pin locks the blade open or closed. Available in fine edge or serrated. The materials throughout this knife were chosen because of their quality and more importantlytheir durability. When their life may depend on it..professionals choose Gerber Legendary Blades as their manufacturer of choice. Key Features: 1. Fully automatic blade 2. Safety lock keeps blade secured in the open and closed positions 3. Textured T6 aluminum handles 4. Pocket clip 1. Fully automatic blade 2. Safety lock keeps blade secured in the open and closed positions 3. Textured T6 aluminum handles 4. Pocket clip Overall Length: 8.87'' Length Closed: 5.35'' Length of Blade: 3.5'' Weight: 5.1 oz. Lock Mechanism: Cross bolt Blade Style: Serrated edge Blade Material: 154CM Stainless steel Handle Material: Top grade machined 6061 - T1 aluminum Sheath: Ballistic nylon